From the Richmond Dispatch, 5/8/1861, p. 2

PHOTOGRAPHS AND AMBROTYPES, finely executed, can be
obtained at reasonable prices at REES’ Steam Gallery, where you are not
detained more than ten minutes to have any number of likenesses taken. A
competent Artist is employed at each branch, which enables them to take them
rapidly and successfully, producing a gem every pop – REES’ improved Pearl
Ambrotypes are the most beautiful and durable picture made. Call and see.